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Finding the Fourth Proportional to 72,307.61, 99,782.28 and 41,680.80

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Solution

The fourth proportional to 72,307.61, 99,782.28 and 41,680.80 is: 57,518.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,307.61 : 99,782.28 = 41,680.80 : x
  2. Step 2: Convert to fraction form
    72,307.61/99,782.28 = 41,680.80/x
  3. Step 3: Cross multiply
    72,307.61x = 99,782.28 × 41,680.80
  4. Step 4: Simplify right side
    72,307.61x = 4,159,005,256.22
  5. Step 5: Solve for x
    x = 4,159,005,256.22/72,307.61
  6. Step 6: Final answer
    x = 57,518.22

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.